Smriti (Sanskrit स्मृति, "that which is remembered") refers to a specific body of Hindureligiousscripture. Smriti also denotes non-Shruti texts generally, seen as secondary in authority to Shruti.
The literature which comprises the Smrti was composed after the Vedas around 500 BCE.
Categorization
Classifying the Smriti has been a contentious issue, even the names of proposed categories are debated. One such taxonomy follows:
Dharmasastra or the laws. This is represented by 18 books. Each book corresponds to an age of time.
Purana or the writings. This is represented by 18 books. They are secondary scriptures that mainly focus on Vishnu or Shiva as the preferred supreme Deity.
Agama or the doctrines. There are three major divisions by doctrine: the Vaisnava, Saiva, and Sakta. Another way of grouping them is by Mantra, Tantra, and Yantra.
'NOTE:-VEDANGAS are LIMBS of veda.So they are the part of SRUTIS not Smrtis.Also DARSANA is called PRASTANA and so not a part of SRUTIS.'There are three prastanas-Sruti,Smrti and Nyaya.Darsana is a part of Nyaya Prastana.